body {
  background: linear-gradient(-45deg, #000000, #b9a1a1, #eb8585, #f04747);
  background-size: 400% 400%;
  animation: gradient 15s ease infinite;
  height: 100vh;
}

@keyframes gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Style the navigation bar */
.navbar {
  width: 100%;
  opacity: 0.75;
  background-color: rgb(109, 2, 2);
  overflow: auto;
}

/* Navbar links */
.navbar a {
  float: right;
  text-align: center;
  padding: 12px;
  color: white;
  text-decoration: none;
  font-size: 17px;
}

/* Navbar links on mouse-over */
.navbar a:hover {
  background-color: rgb(255, 5, 5);
}

/* Current/active navbar link */
.active {
  background-color: rgb(0, 0, 0);
}

/* Add responsiveness - will automatically display the navbar vertically instead of horizontally on screens less than 500 pixels */
@media screen and (max-width: 500px) {
  .navbar a {
    float: none;
    display: block;
  }
}
.navbar-right {
  float: left;
}

.navbar-right img {
  display: inline-block;
  vertical-align: top;
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.navbar-right a:hover {
  background-color: rgb(109, 2, 2);
}

@keyframes gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.imageProduct {
  display: block;
  margin-left: auto;
  margin-right: auto;
  height: 20px;
}

.texteSegment {
  margin-top: 1cm;
  border: 5px solid #555;
  background-color: rgb(104, 47, 47);
}

html {
  padding-left: 2cm;
  padding-right: 2cm;
}



.infoPartie label {
  color: white;
  size: 1cm;
  margin-right: 0.5cm;
  flex: auto;
  
}

.infoPartie input {
  margin-bottom: 0.5cm;

}
.infoPartie button{
  flex:auto;
}

.button {
  background-color: #a40505; 
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);

}

.button span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
}

.button span:after {
  content: '\00bb';
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.button:hover span {
  padding-right: 25px;
}

.button:hover span:after {
  opacity: 1;
  right: 0;
}